Behemoth

You're a proud new captain of the Behemoth — the undefeated steam-powered spaceship. Enemy bullets can't put a dent in you, though you're far from invincible.

Every time you shoot or get hit, you risk overheating your engines. The more steam you've got built up in your engines, the worse it is.

Though overheating gives you extra strength, you either need to cool your engines down or quickly discharge the built-up steam. When timed right, this discharged cloud of steam may even shield you from enemy bullets.